<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>用户管理</el-breadcrumb-item>
        <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域-->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">  
            <el-input placeholder="请输入内容" 
                      v-model="queryInfo.query" 
                      clearable
                      @clear="_getUserList">
            <!-- <el-select v-model="select" slot="prepend" placeholder="请选择">
              <el-option label="餐厅名" value="1"></el-option>
              <el-option label="订单号" value="2"></el-option>
              <el-option label="用户电话" value="3"></el-option>
            </el-select> -->
            <el-button slot="append" icon="el-icon-search" @click="_getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="dialogVisible=true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
            <el-tooltip effect="dark" content="分配角色" placement="top-start" :enterable="false">
              <el-button type="danger" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
        <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1,2, 4,10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
      <el-input v-model="jump" size="small" style="width:40px;" @keyup.enter.native="jumppage()"></el-input>
      <el-button @click="jumppage" size="small" type="primary">跳转</el-button>
    </el-card>

    <!-- 添加用户对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="dialogVisible"
      width="30%"
      @close="addDialogClosed">
      <!-- 内容主体区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="120px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="dialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="用户名" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色对话框 -->

    <el-dialog title="分配角色"
              :visible.sync="setRoleDialogVisible"
              width="50%"
              @close="setRoleDialogClosed">
      <div>
        <p>当前的用户:{{userInfo.username}}</p>
        <p>当前的角色:{{userInfo.role_name}}</p>
        <p>分配角色
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option v-for="item in roleList"
                      :key="item.id"
                      :label="item.roleName"
                      :value="item.id">
            </el-option>
          </el-select>
        </p>

      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
import {getUsers} from '../../api/menu.js'

export default {
  data() {
    // 验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      // 验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

        if (regEmail.test(value)) {
          return cb()
        }
        cb(new Error('请输入合法的邮箱'))
    }

    var checkMobile = (rule, value, cb) => {
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
  
      if (regMobile.test(value)) {
        return cb()
      }

      cb(new Error('请输入合理的手机号'))
  }

    return {
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 1
      },
      userlist: [],
      total: 0,
      jump: 1,
      dialogVisible: false,
      // 添加用户表单数据
      addForm: {
        username: ''
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required:true, message:'请输入用户名', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '用户名的长度在3-10个字符之间',
            trigger: 'blur'
          }
        ],
        password: [
          { required:true, message:'请输入密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '密码的长度在6-15个字符之间',
            trigger: 'blur'
          }
        ],
        email: [
          { required:true, message:'请输入邮箱', trigger: 'blur' },
          {validator: checkEmail, trigger: 'blur'}
        ],
        mobile: [
          { required:true, message:'请输入手机号', trigger: 'blur' },
          {validator: checkMobile, trigger: 'blur'}
        ],
      },
      // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {},
      // 修改表单的验证规则对象
      editFormRules: {
        email: [
          {required: true, message: '请输入用户邮箱',trigger: 'blur'},
          { validator: checkEmail, trigger:'blur' }
        ],
        mobile: [
          {required:true, message: '请输入用户手机', trigger: 'blur'},
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      roleList: [],
      selectedRoleId: ''
    } 
  },
  created() {
    this._getUserList()
  },
  methods: {
    async _getUserList() {
      const {data: res} = await getUsers(this.queryInfo)
      console.log(res);
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败')
      }

      this.userlist = res.data.users
      this.total = res.data.total
    },
    // 监听pagesize改变的事件
    handleSizeChange(newSize) {
      console.log(newSize);
      this.queryInfo.pagesize = newSize
      this._getUserList()
    },
    // 监听页码值pagenum 改变的事件
    handleCurrentChange(newPage) {
      console.log(newPage);
      this.queryInfo.pagenum = newPage
      this._getUserList()
    },
    jumppage() {
      this.queryInfo.pagenum = Number(this.jump)
      this._getUserList()
    },
    async userStateChanged(userInfo) {
      const {data: res} = await this.$http.put(`/users/${userInfo.id}/state/${userInfo.mg_state}`)
      console.log(res);
      if( res.meta.status !== 200 ) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error('更新用户状态失败!')
      }
      return this.$message.success('更新用户状态成功!')
    },
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮，添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        console.log(valid);
        if(!valid) return
        // 可以发起添加用户的网络请求
        const {data: res} = await this.$http.post('/users', this.addForm)
        console.log(res);
        
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败')
        }

        this.$message.success('添加用户成功')
        this.dialogVisible  =false
        this._getUserList()
      })
    },
    //
    async showEditDialog(id) {
      this.editDialogVisible = true
      console.log(id);
      const {data:res} = await this.$http.get('/users/'+ id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败')
      }
      this.editForm = res.data
      console.log(this.editForm);
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    editUserInfo() {
      this.$refs.editFormRef.validate(async (valid) => {
        if(!valid) return
        // 发起修改用户的请求
        const {data: res} = await this.$http.put('/users/' + this.editForm.id,{
          email:this.editForm.email,
          mobile: this.editForm.mobile
        })

        if(res.meta.status !== 200) {
          return this.$message.error('更新用户信息失败！')
        }
        // 关闭对话框
        this.editDialogVisible = false
        // 刷新数据列表
        this._getUserList()
        // 提示修改成功
        this.$message.success('更新用户信息成功！')
      })
    },
    async removeUserById(id) {
      // 弹框询问用户是否删除数据
      const confirmResult = await this.$confirm(
        '此操作是永久删除该用户，是否继续？',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => {
          return err
        })
        // 如果用户取消删除，则返回值为字符串confirm
        // 如果用户取消了删除，则返回值为字符串cancel
        console.log(confirmResult)
        if(confirmResult !== 'confirm') {
          return this.$message.info('已取消删除')
        }
        const {data:res} = await this.$http.delete('/users/' + id)
        // const test = await this.$http.delete('/users/' + id)
        // console.log(test);
        if(res.meta.status !== 200) {
          return this.$message.error('删除用户失败')
        }
        this.$message.success('删除用户成功')
        this._getUserList()
    },
    async setRole(userInfo) {
      this.userInfo = userInfo
      // 在展示对话框之前获取角色列表
      const {data :res} = await this.$http.get('/roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      this.roleList = res.data

      this.setRoleDialogVisible = true
    },

    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.message.error('请选择要分配的角色')
      }
      const {data: res} = await this.$http.put(`/users/${this.userInfo.id}/role`,{
        rid: this.selectedRoleId
      })
      console.log(res);
      
      if(res.meta.status !== 200) {
        return this.$message.error('更新角色失败')
      }
      this.$message.success('更新角色成功')
      this._getUserList()
      this.setRoleDialogVisible=false
    },
    setRoleDialogClosed() {
      this.userInfo = [],
      this.selectedRoleId = ''
    }
  }
}
</script>

<style lang="less" scoped>
    .el-breadcrumb{
        margin-bottom: 15px;
        font-size: 12px;
    }

    .el-card{
      box-shadow: 0 10px 10px rgba(0, 0, 0, 0.15) !important
      
    }
    .el-row{
      margin-bottom: 15px;
    }

    .el-pagination{
      margin-top: 15px;
    }
</style>